EP3204191A1 - Dispositif de serrage à genouillère, à utiliser en particulier dans le montage de carrosserie dans l'industrie automobile - Google Patents

Dispositif de serrage à genouillère, à utiliser en particulier dans le montage de carrosserie dans l'industrie automobile

Info

Publication number
EP3204191A1
EP3204191A1 EP15770794.4A EP15770794A EP3204191A1 EP 3204191 A1 EP3204191 A1 EP 3204191A1 EP 15770794 A EP15770794 A EP 15770794A EP 3204191 A1 EP3204191 A1 EP 3204191A1
Authority
EP
European Patent Office
Prior art keywords
piston
cylinder
clamping
toggle
compressed air
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
EP15770794.4A
Other languages
German (de)
English (en)
Inventor
Josef-Gerhard Tünkers
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Olaf und Andre Tuenkers GbR
Original Assignee
Olaf und Andre Tuenkers GbR
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=54053984&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP3204191(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Olaf und Andre Tuenkers GbR filed Critical Olaf und Andre Tuenkers GbR
Publication of EP3204191A1 publication Critical patent/EP3204191A1/fr
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B5/00—Clamps
    • B25B5/06—Arrangements for positively actuating jaws
    • B25B5/12—Arrangements for positively actuating jaws using toggle links
    • B25B5/122—Arrangements for positively actuating jaws using toggle links with fluid drive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
    • B23K37/0426—Fixtures for other work
    • B23K37/0435—Clamps

Definitions

  • Toggle clamping device in particular for use in
  • the invention relates to a toggle lever device, in particular for use in the bodywork of the automotive industry.
  • toggle lever clamps are previously known in a large number of different constructions. A selection shows the publications listed in the bibliography.
  • Such toggle lever clamping devices consist of a so-called chuck, on which a drive in the form of a piston-cylinder unit is arranged.
  • the piston of this piston-cylinder unit is preferably applied alternately on both sides by compressed air in order to drive via a piston rod arranged in a clamping head toggle joint mechanism.
  • This toggle joint mechanism is associated with a clamping arm, which is located around a clamping head in the fixed pivot axis to a limited angular extent can be driven in a pivotable manner.
  • the tensioning arm can have different designs.
  • toggle clamping devices are used in manufacturing plants, in particular in the bodywork of the automotive industry, in large numbers to hold sheet-like parts of a body in position so that they permanently, for example by spot welding, by gluing or clinching, can be connected.
  • the space for housing toggle clamps and other devices is often limited. It has therefore been proposed to form the cylinders of the piston-cylinder units flat oval, in order to save space.
  • the cylinders still build relatively long, since you need pistons of certain sizes to achieve the necessary clamping forces. Attempting to use smaller cylinders has failed because then you also need to replace the clamping heads to adapt to the reduced piston-cylinder units, along with a reduction in clamping forces.
  • a working cylinder in particular for use in the bodywork of the automotive industry is already known for a pressurized fluid, with a cylinder and a longitudinally displaceable and sealingly guided piston which is integrally connected to a piston rod, which is sealed out of the cylinder and with the interposition of transmission parts, such as handlebar, parallelogram, toggle joint assembly or the like, devices for clamping and / or joining and / or punching and / or embossing and / or welding and / or punching and / or clinching, drives, with at least one formed as a multi-way valve control valve, a pressure medium source and channels or lines, the fluid source via the control valve either simultaneously to the opposite cylinder chambers (piston rod side cylinder space and working cylinder space), or alternately the piston rod side cylinder space at the opening hub, or the source of pressure is only available After completion of the idle stroke with the working cylinder chamber connects rend of the power stroke, wherein between the pressure medium source and the control
  • This device can be used with particular advantage for driving toggle lever tensioning devices, clinching devices and centering devices in the bodywork of the automotive industry.
  • toggle lever In large numbers used in production lines, so that usually large amounts of compressed air are used, which are basically not needed during the idle stroke.
  • DE 10 2006 041 707 B4 likewise discloses a piston-cylinder unit (working cylinder) with a piston that is longitudinally displaceably and sealingly guided in a cylinder by fluid pressure and has a piston rod guided out of the cylinder on one side (piston ring side).
  • the device parts for clamping and / or pressing and / or joining and / or punching and / or embossing and / or punching and / or welding, for example, with the interposition of a toggle joint arrangement drives, wherein the working cylinder channels are assigned, from the beginning to the End of the idle stroke (Anstellhub) allow actuation of a Häzyiinderraumes and a Zylinder Weghubraumes with the fluid pressure and vent the beginning of the introduction of the power stroke the Zylinder Weghubraum and pressurize only the working cylinder chamber with fluid pressure, wherein the piston on one side of the piston rod in a bore associated with a control pin is the is mounted against the restoring force of a prestressed compression spring element and the initiating of the power stroke actuated a valve or a piston valve, such that the piston ring side is to vent, or that the Zylinder Weghubraum is connected via a control system to the fluid supply and / or discharge.
  • the working cylinder channels
  • the fluid supply during the Leerhubes (Anstellhub) of the piston is controlled such that only the inertial and / or weight forces and / or frictional forces of moving parts are overcome and only at the power stroke of the piston with the fluid pressure can be acted upon
  • said Piston on one side of the piston rod in a bore is associated with a control bolt which is mounted against the restoring force of a prestressed compression spring element and which actuates a valve or a piston slide upon introduction of the power stroke, such that the piston ring side is to be vented.
  • a fork head connected to the piston rod or a toggle joint assembly connected thereto can control a valve, for example a piston valve, with termination of the idle stroke (setting) such that now the full fluid pressure acts on the piston.
  • a valve for example a piston valve
  • German utility model 20 2009 008 068.4 is also a device for clamping and / or joining and / or Punching and / or embossing and / or welding and / or punching and / or clinching and / or pivoting, in particular for use in the bodywork of the automotive industry previously known, in which always by a single pressure medium line the pressure medium, especially compressed air, from the fluid - Or pressure medium source, both cylinder chambers, so both the piston rod side and the working cylinder, can be fed. This can save energy.
  • this known device is characterized in that in the working position of the arm through the pivot centers of the housing head fixed axis of the arm and the adjacent arm pivot axis imaginary straight line forms an acute angle with an imaginary straight line through the pivot centers of the handlebar pivot axis and the Swivel center of the actuator dome axis runs, and this imaginary straight line
  • the toggle joint arrangement forms a right angle or approximately right angle with the longitudinal axis of the actuator.
  • This device is intended to allow for pivoting units to achieve a constant or approximately constant torque over the entire pivoting angle range of the arm via its housing head fixed pivot axis.
  • This angle range can be, for example, a maximum of 185 degrees to 180 degrees. Due to the fact that the entire angle range around which the lever around its housing head fixed axis via the toggle joint can pivot, at an acute angle forward, is tilted away or shifted away from the longitudinal axis of the actuator, the lever arm, where the forces can act on the actuator, changed favorably.
  • DE 10 2006 022 950 A1 also relates to a clamping device for fixing workpieces, consisting of a connected to an axially adjustable control rod of a pneumatically or hydraulically actuated drive member actuating mechanism formed of the end of the control rod and a drag member, with a lever for the in a headpiece mounted pivot shaft of the device clamping arm is pivotally connected, wherein the housing of the drive member extends at least by the stroke of the actuating rod with its actuating rod and arranged in the housing by a correspondingly extended control rod and the displacement of the drive member limiting partition wall, wherein the cross section of one-piece housing over the partition corresponds to the cubic capacity, and that the head piece is dimensioned in its inner height substantially with the length of the actuating lever.
  • the housing of the drive member is extended by at least the stroke of the control rod with its adjusting rod piston, wherein in the housing by a correspondingly elongated adjusting rod engages and the displacement of the drive member limiting partition is arranged.
  • the cross section of the housing over the partition wall, that is to be placed on the head piece corresponds to the cross section of the displacement.
  • the alseuticde and suitably fastened head piece is in this case also dimensioned in its inner height substantially with the length of the adjusting lever, that is, the head piece is substantially reduced in size or length compared to previous headers.
  • the housing which thus comprises the actual drive member, is provided at the lower end with a correspondingly adapted end plate and is an extending component. This is to be without the one-piece housing change, constructively externally differently shaped head pieces attach to the housing if this should require special applications. This should happen under the condition that such different headers but must fit in connection with the one-piece housing.
  • the invention has for its object to reduce the energy requirement by simple structural measures in a generic presupposed toggle lever device.
  • Claim 1 describes a toggle clamping device, in particular for use in the bodywork of the automotive industry, with specific specifications of industry industry connection dimensions, for example, for threaded holes on the chuck, for arranging the toggle lever clamping device in a production line, to be acted upon by compressed air drive unit whose Piston is to be acted upon alternately in opposite directions by compressed air in compressed directions, which in a circular or deviating from the circular shape - for example, flat oval - cylinder according to industry standards or designations, for example 40, 50, 63, longitudinally displaceable and sealing, wherein the piston in the stroke direction drives a variable-length actuator which drives a power transmission arm at its end remote from the piston via a toggle lever joint, which is connected in a geared manner via a pivotable in the chuck head, but otherwise ortsunbewegliche axis of rotation and which is led out of the clamping head on one side or both sides, and which drives a clamping arm
  • the independent claim 2 describes a solution for a toggle lever device, in particular for use in the bodywork of the automotive industry, in particular for use in the bodywork of the automotive industry, with a clamping head, arranged thereon, to be acted upon by compressed air alternately piston-cylinder unit, the an extending in the stroke direction of the piston, optionally variable-length actuator, drives, at its piston remote end via a toggle joint and a power transmission arm, which is guided out via a stationary in the chucking axis of rotation, which is led out laterally from the chuck, a clamping arm or the like pivotally drives, characterized in that while maintaining the clamping force on the clamping arm and while maintaining the mounting dimensions of the clamping head, the clamping head in each case a smaller diameter cylinder with a correspondingly smaller piston and thus smaller on the actuator, for example Associated with the piston rod to be transmitted force and thus the respectively reduced piston force by increasing the effective lever length of the power transmission of the toggle joint mechanism according to the reduction of the piston force of the piston is restored to the original value
  • the world-wide practiced industry standard for the toggle clamp series in the automotive industry includes the same technical data of the dimensions, clamping and holding forces and cylinder diameter. Notwithstanding this standard, while maintaining the technical data according to the invention, in each case smaller cylinder diameters are used, which lead to a reduction of the compressed air or energy consumption between 25 to 60%.
  • the toggle lever clamping device is characterized in that when using a smaller cylinder with a smaller diameter and thus smaller piston, the resulting reduced clamping force is compensated by a larger torque of the toggle joint mechanism.
  • the reduced force exerted by the piston of the much smaller piston-cylinder unit is compensated for with equal dimensions. If necessary, the mere replacement of the power transmission arm is sufficient to use a smaller cylinder while maintaining the clamping force on the clamping arm.
  • the same reference value should be used.
  • Applicant measures the holding torque at an angle of 7 degrees, based on the dead center position of the toggle joint mechanism, in which the one lug makes an angle of 90 degrees to the longitudinal axis of the actuator, ie the piston rod.
  • the holding torque or torque on the axis of rotation changes over the course of the operating life due to signs of wear. So, comparing different competing products with each other in terms of holding moments or torques at the axes of rotation, one has to distinguish from the same initial conditions when measuring. hen.
  • cylinders are understood to mean not only circular cylinders in cross-section, ie also pistons with effective piston surfaces of a circle, but also cylinders which have a shape deviating from the circular shape of the pistons and thus the internal cross sections of the cylinders in which the pistons are sealed and alternately lubricated by compressed air.
  • cylinders deviating from the circular shape they are understood to have a flat-oval design. If we speak here of the effective piston surfaces in deviating from the circular piston, these are pressure-effective surfaces.
  • Fig. 1 is a knee lever tensioning device schematically in side view
  • FIGS. 1 and 2 shows a longitudinal section through a toggle lever clamping device according to FIGS. 1 and
  • FIG. 3 is a plan view of Fig. 2nd
  • reference numeral 1 denotes a total of a toggle lever device, which consists essentially of a clamping head 2 and a piston-cylinder unit 3 arranged replaceably on this.
  • the toggle clamping device is provided, if necessary, on all four sides of the clamping head 2 with blind holes threaded, in order to be able to grow them on all four sides.
  • the piston-cylinder unit 3 has a cylinder 4 and a longitudinally displaceable and sealingly guided piston 5.
  • the piston 5 is alternately acted upon by both sides controlled by compressed air, thereby performing a stroke in the direction of X or Y by.
  • an elongated adjusting element designed as a piston rod 6 is connected in a gearing manner, which in the illustrated embodiment, however, is not necessarily multi-part and length-adjustable in order to permit length adjustment in the stroke direction X or Y, and the stroke in the direction X or Y of the To change the piston 5 and thereby the pivot angle of a clamping arm or the like.
  • the piston rod can consist of multi-part screwed spindle parts.
  • the piston rod 6 For length adjustment of the piston rod 6, it is possible to pass through a closable opening 8 in a bottom cover 9 of the cylinder 4 with a tool to connect this tool with a recess of a screw head 7 of the piston rod 6 as needed. By means of the tool then the piston rod 6 can be rotated in opposite directions and thereby the stroke of the piston 5 in the direction X or Y are adjusted to be larger or smaller continuously.
  • the sensitivity of the adjustment depends on the pitch of the thread, with which the parts of the elongated adjusting member 6 are screwed into one another.
  • a toggle lever joint 10 is connected by gearing, which consist of a plurality of pivot axes 11 and 12 pivotally coupled to each other flap elements.
  • gearing consist of a plurality of pivot axes 11 and 12 pivotally coupled to each other flap elements.
  • These tab elements can be connected to the piston rod 6 or a part of the piston rod 6 by means of a gear, for example via a clevis 13, in a geared and interchangeable manner.
  • a power transmission arm 14 is coupled and pivotally movable.
  • the power transmission arm 14 may consist of several elements.
  • the power transmission arm 14 is over a in Fig. 2 only indicated by a dash-dotted crosshairs, pivotable in the chuck 2, but otherwise ortsunbewegliche axis of rotation 15 connected by gearing, which is led out laterally from the chuck 2 ( Figure 3) and here in the illustrated embodiment ( Figure 1) has a square shape, with the an unillustrated tensioning arm, z. B. in the form of a fork or even on one side, releasably to couple.
  • the clamping arm can be against a suitable abutment, for example, the chuck 2 associated unillustrated so-called pine, clamping sheet-like workpieces to them permanently in a suitable manner, for. B. by clinching, spot welding, gluing together can connect.
  • a suitable abutment for example, the chuck 2 associated unillustrated so-called pine, clamping sheet-like workpieces to them permanently in a suitable manner, for. B. by clinching, spot welding, gluing together can connect.
  • the dimension "50” designates the effective piston diameter and thus also the inner diameter of the cylinder 4.
  • the dimension L for a tensioner U 63 with a 50 mm cylinder can be 42 mm, while the total stroke of the piston 5 is 103 mm at a maximum pivot angle of not shown clamping arm of 135 °.
  • the clamping head 2 consists in the illustrated embodiment of two sandwiched housing parts, preferably housing halves 16 and 17, which are arranged sealed to each other and enclose an inner space 18 of the clamping head 2 sealingly and thereby the toggle joint 10th and also largely protect the here arranged parts of the nested piston rod 6 against dirt and moisture.
  • sensors may be provided, which are damped by a switching flag and thereby detect the end positions of the piston rod 6 respectively.
  • the measured values are forwarded to a plug-in unit, from which the data are tapped and forwarded to a suitable central control unit (also not shown).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jigs For Machine Tools (AREA)

Abstract

L'invention concerne un dispositif de serrage à genouillère, à utiliser en particulier dans le montage de carrosserie dans l'industrie automobile. La norme industrielle utilisée dans le monde entier pour la gamme de fabrication des genouillères de l'industrie automobile comprend les mêmes spécifications techniques en termes de dimensions, de forces de serrage et de maintien et diamètre et de diamètre de cylindre. En s'écartant de cette norme tout en conservant les données techniques, on utilise selon l'invention des diamètres de cylindre plus petits qui permettent une réduction de la consommation d'air comprimé et d'énergie de 25 à 60↓%.
EP15770794.4A 2014-10-06 2015-09-12 Dispositif de serrage à genouillère, à utiliser en particulier dans le montage de carrosserie dans l'industrie automobile Ceased EP3204191A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102014014857.2A DE102014014857B3 (de) 2014-10-06 2014-10-06 Kniehebelspannvorrichtung, insbesondere zur Verwendung im Karosseriebau der Kfz-Industrie
DE202015004786.6U DE202015004786U1 (de) 2014-10-06 2015-07-03 Kniehebelspannvorrichtung, insbesondere zur Verwendung im Karosseriebau der Kfz-Industrie
PCT/EP2015/001832 WO2016055138A1 (fr) 2014-10-06 2015-09-12 Dispositif de serrage à genouillère, à utiliser en particulier dans le montage de carrosserie dans l'industrie automobile

Publications (1)

Publication Number Publication Date
EP3204191A1 true EP3204191A1 (fr) 2017-08-16

Family

ID=54053984

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15770794.4A Ceased EP3204191A1 (fr) 2014-10-06 2015-09-12 Dispositif de serrage à genouillère, à utiliser en particulier dans le montage de carrosserie dans l'industrie automobile

Country Status (4)

Country Link
US (2) US20180185989A1 (fr)
EP (1) EP3204191A1 (fr)
DE (2) DE102014014857B3 (fr)
WO (1) WO2016055138A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITUB20153120A1 (it) 2015-08-13 2017-02-13 Pneumax S P A Unita' di attuazione del tipo a leva articolata a efficienza ottimizzata

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006041707B4 (de) * 2006-05-10 2009-01-02 Tünkers Maschinenbau Gmbh Kolben-Zylinder-Einheit (Arbeitszylinder) zum Spannen, und/oder Pressen, und/oder Fügen, und/oder Stanzen, und/oder Prägen, und/oder Lochen und/oder Schweißen, zum Beispiel unter Zwischenschaltung einer Kniehebelgelenkanordnung
DE102006022950A1 (de) * 2006-05-17 2007-11-22 De-Sta-Co Europe Gmbh Spannvorrichtung zum Festlegen von Werkstücken
DE102008007256B3 (de) * 2008-02-01 2009-08-20 Tünkers Maschinenbau Gmbh Arbeitszylinder, insbesondere zur Verwendung im Karosseriebau der Kfz-Industrie zum Antreiben von Vorrichtungen zum Spannen und/oder Fügen und/oder Stanzen und/oder Prägen und/oder Schweißen und/oder Lochen und/oder Clinchen
DE202009002141U1 (de) * 2009-02-14 2009-04-23 Tünkers Maschinenbau Gmbh Vorrichtung mit einem über ein Stellglied und einer Kniehebelgelenkanordnung durch einen Antrieb in entgegengesetzten Richtungen antreibbaren Hebel, dem eine oder mehrere Massen zugeordnet ist bzw. sind, insbesondere zur Verwendung im Karosseriebau der Kfz-Industrie

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
None *
See also references of WO2016055138A1 *

Also Published As

Publication number Publication date
DE202015004786U1 (de) 2015-08-14
DE102014014857B3 (de) 2015-11-12
US20180185989A1 (en) 2018-07-05
WO2016055138A1 (fr) 2016-04-14
US20200331121A1 (en) 2020-10-22

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